WO2024027319A1 - Climatiseur et procédé et appareil de commande de volume d'air constant associés, et support de stockage - Google Patents

Climatiseur et procédé et appareil de commande de volume d'air constant associés, et support de stockage Download PDF

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Publication number
WO2024027319A1
WO2024027319A1 PCT/CN2023/097575 CN2023097575W WO2024027319A1 WO 2024027319 A1 WO2024027319 A1 WO 2024027319A1 CN 2023097575 W CN2023097575 W CN 2023097575W WO 2024027319 A1 WO2024027319 A1 WO 2024027319A1
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WIPO (PCT)
Prior art keywords
air volume
power
current
indoor fan
rotation speed
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PCT/CN2023/097575
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English (en)
Chinese (zh)
Inventor
钟明胜
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广东美的暖通设备有限公司
合肥美的暖通设备有限公司
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Publication of WO2024027319A1 publication Critical patent/WO2024027319A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/75—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity for maintaining constant air flow rate or air velocity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/89—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/50—Air quality properties
    • F24F2110/64—Airborne particle content
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/40—Damper positions, e.g. open or closed

Definitions

  • the present disclosure relates to the technical field of air conditioning control, and in particular to an air conditioner and its constant air volume control method, device, and storage medium.
  • Air conditioners are commonly used refrigeration equipment in modern households. They often work for a long time.
  • the heat exchanger will accumulate a lot of dust due to long-term work, which will lead to an increase in static pressure, a decrease in the output air volume, and a deterioration of the cooling effect.
  • the inconsistent length and height of the air ducts installed with the air outlets will also cause the static pressure to increase and the air volume to decrease, causing the heat exchanger to be unable to fully exchange heat, reducing the energy efficiency ratio and weakening the cooling effect.
  • the present disclosure aims to solve one of the technical problems in the related art, at least to a certain extent.
  • the first purpose of the present disclosure is to propose a constant air volume control method for an air conditioner, which can calculate the updated rotation speed using the preset relationship between rotation speed and power and the current rotation speed when the current power is equal to the target power. Then, the indoor fan is controlled to obtain the air volume that matches the air volume command. In this way, even if the static pressure changes, the air volume output by the indoor fan can be maintained, ensuring the heat exchange effect, and the method is simple and reliable.
  • the second object of the present disclosure is to provide an air conditioner.
  • a third object of the present disclosure is to provide a computer-readable storage medium.
  • the fourth object of the present disclosure is to provide a constant air volume control device for an air conditioner.
  • the first embodiment of the present disclosure proposes a constant air volume control method for an air conditioner, which includes: obtaining the current rotation speed and current power of the indoor fan according to the air volume command; obtaining the update rotation speed, and the update rotation speed is between the current power and the current power.
  • the target power is equal, the preset relationship between speed and power and the current speed are calculated.
  • the target power is determined by the air volume command; the updated speed is used to control the operation of the indoor fan so that the air volume output by the indoor fan matches the air volume command.
  • the preset relationship between the rotation speed and the power and the current rotation speed can be used to calculate the updated rotation speed, and then control the indoor fan. And obtain the air volume that matches the air volume command, so that even if the static pressure changes, the air volume output by the indoor fan can be maintained, ensuring the heat exchange effect, and the method is simple and reliable.
  • the second embodiment of the present disclosure proposes an air conditioner, which includes a memory, a processor, and a constant air volume control program of the air conditioner stored in the memory and executable on the processor.
  • the processor executes the air conditioner.
  • the constant air volume control program is used, the constant air volume control method of the air conditioner in any of the above embodiments is implemented.
  • the updated rotation speed can be calculated using the preset relationship between rotation speed and power and the current rotation speed, and then the updated rotation speed can be calculated.
  • the indoor fan is controlled to obtain an air volume that matches the air volume command. In this way, even if the static pressure changes, the air volume output by the indoor fan can be maintained, ensuring the heat exchange effect, and the method is simple and reliable.
  • a third embodiment of the present disclosure provides a computer-readable storage medium on which a constant air volume control program of an air conditioner is stored.
  • the constant air volume control program of the air conditioner is executed by a processor, the above implementation is realized.
  • the updated rotation speed can be calculated using the preset relationship between rotation speed and power and the current rotation speed. , and then control the indoor fan to obtain an air volume that matches the air volume command. In this way, even if the static pressure changes, the air volume output by the indoor fan can be maintained, ensuring the heat exchange effect, and the method is simple and reliable.
  • the fourth embodiment of the present disclosure proposes a constant air volume control device for an air conditioner, including: an acquisition unit for obtaining the current rotation speed and current power of the indoor fan according to the air volume instruction; a control unit for obtaining Update the speed, and use the update speed to control the operation of the indoor fan so that the air volume output by the indoor fan matches the air volume command.
  • the update speed is calculated using the preset relationship between speed and power and the current speed when the current power is equal to the target power.
  • the target power is determined by the air volume command.
  • the updated rotation speed can be obtained by calculating the preset relationship between the rotation speed and the power and the current rotation speed, and then controlling the indoor fan to obtain The air volume matches the air volume command, so that even if the static pressure changes, the air volume output by the indoor fan can be maintained, ensuring the heat exchange effect, and the method is simple and reliable.
  • Figure 1 is a schematic flowchart of a constant air volume control method for an air conditioner according to some embodiments of the present disclosure
  • Figure 2 is a schematic flowchart of obtaining current rotation speed and current power according to some embodiments of the present disclosure
  • Figure 3 is a schematic diagram of obtaining update speed according to some embodiments of the present disclosure.
  • Figure 4 is a schematic structural diagram of a constant air volume control device of an air conditioner according to some embodiments of the present disclosure.
  • FIG. 1 is a schematic flowchart of a constant air volume control method for an air conditioner according to some embodiments of the present disclosure.
  • the constant air volume control method of the air conditioner may include:
  • the updated rotational speed is calculated using the preset relationship between rotational speed and power and the current rotational speed when the current power is equal to the target power.
  • the target power is determined by the air volume command.
  • the above constant air volume control method can use the preset relationship between speed and power and the current speed calculation to obtain the updated speed when the current power is equal to the target power, and then control the indoor fan to obtain the air volume that matches the air volume command. In this way, even if the static pressure changes, the air volume output by the indoor fan can be maintained, ensuring the heat exchange effect, and the method is simple and reliable.
  • the air conditioner may be a duct air conditioner, etc.
  • the air duct air conditioner may be an air duct machine equipped with a squirrel cage type wind wheel, or other types of air duct machines.
  • the duct machine can be an embedded duct machine.
  • the air duct machine may include a main body, an indoor heat exchanger and an indoor fan arranged in the main body.
  • the indoor fan includes a motor and a wind wheel, and the motor is used to rotate the wind wheel.
  • the main body is equipped with an air outlet and a return air outlet.
  • an air volume command can be given, and the indoor fan can be controlled based on the air volume command.
  • the current speed and current power of the indoor fan can be obtained based on the air volume command, and the target power can be determined, and then the indoor fan can be controlled based on the air volume command.
  • the updated speed is calculated using the preset relationship between speed and power and the current speed, and then the indoor fan is controlled based on the updated speed so that the air volume output by the indoor fan matches the air volume command, so that even Changes in static pressure can also maintain the air volume output by the indoor fan.
  • the constant air volume control method of this embodiment can maintain the air volume of the indoor fan based on the air volume command when the static pressure changes, thereby ensuring the heat exchange effect, and the method is simple and reliable.
  • the current rotation speed and current power of the indoor fan are obtained according to the air volume instruction, include:
  • the preset rotation speed can be set in advance, and the preset rotation speed can be a rotation speed within the rotation speed range of the indoor fan.
  • the preset speed is obtained, and the indoor fan is controlled to run at the preset speed.
  • the current speed and current power are obtained.
  • the preset time can be set in advance.
  • the preset time is 2 minutes, that is, the indoor fan runs at the preset speed for 2 minutes to obtain the current speed and current power.
  • the preset time can be longer than the time required for the indoor fan's rotational speed to stabilize after it is started.
  • the specific value of the preset time can be set according to actual conditions and is not specifically limited here.
  • the current rotation speed can be obtained based on the motor position estimation of the indoor fan, and the current power can be obtained based on the real-time voltage and current estimation of the indoor fan.
  • the preset rotation speed is the minimum rotation speed of the indoor fan. Since the rotation speed is positively related to the air volume, the rotation speed of the indoor fan can be gradually adjusted from the minimum rotation speed, that is, the air volume output by the indoor fan can be gradually adjusted from the minimum air volume, so that the air volume matching the air volume command can be obtained.
  • the preset relationship between rotational speed and power includes a first preset relationship and a second preset relationship.
  • the first preset relationship includes a corresponding relationship between current power and current rotational speed
  • the second preset relationship includes a corresponding relationship between target power and current rotational speed. Update the corresponding relationship of rotation speed. In this way, based on different preset relationships between rotational speed and power, when the target power is equal to the current power, the updated rotational speed can be calculated based on the current rotational speed.
  • the first preset relationship is a cubic relationship between power and rotational speed, which not only accurately reflects the relationship between rotational speed and power, but also reduces the amount of calculation required to update the speed.
  • p is the indoor fan power
  • n is the indoor fan speed
  • ka, kb and kc are constants.
  • the constants ka, kb and kc can be obtained through curve fitting based on the experimental data.
  • p is the indoor fan power
  • n is the indoor fan speed
  • k4 is a constant.
  • formula (2) corresponds to a constant, it can be calculated based on a set of power and rotation speed. Therefore, the relationship between rotation speed and power corresponding to formula (2) can be used as the first preset relationship, that is, the current power and the corresponding relationship between the current speed and the current speed.
  • the constant k4 can be calculated from the first preset relationship; since the formula (1) contains multiple constants, the speed and power corresponding to the formula (1) can be relationship as the second default relationship, That is, the corresponding relationship between the target power and the updated speed, where the constants can be obtained through experimental testing in advance. It can be seen from formula (2) that the first preset relationship omits the quadratic term and the linear term of the indoor fan rotation speed. Therefore, it can also be understood that the first preset relationship is obtained by simplifying the second preset relationship.
  • the updated rotation speed can be calculated according to Formula 2-1.
  • the updated speed can be used as the speed to control the indoor fan at the next moment.
  • the target power is determined by a preset relationship between power and air volume and the air volume corresponding to the air volume command, wherein the preset relationship between power and air volume is a pre-calibrated corresponding relationship between power and air volume. In this way, the target power can be obtained quickly and accurately based on the air volume corresponding to the air volume command and the preset relationship between power and air volume.
  • the power is based on the first power and the first weight corresponding to the lower limit value of the air volume interval, and the second power and the second weight corresponding to the upper limit value of the air volume interval. Obtained, the air volume interval is determined by the air volume corresponding to the air volume command.
  • the air volume interval can be set in advance, for example, it can be set based on the air volume range of the air conditioner.
  • the air volume range of the air conditioner is [Q min , Q max ], where Q max is the maximum air volume during the operation of the air conditioner, and Q min is the minimum air volume during the operation of the air conditioner, then based on the air volume range [ Q min , Q max ] can generate at least three air volume values, and then generate an air volume interval based on at least three air volume values.
  • the air volume interval includes two, respectively: the first air volume interval [Q a , Q b ] and the second air volume range (Q b , Q c ].
  • the air volume range of the air conditioner is [Q min , Q max ], which is a subsection of the entire air volume range that the indoor fan can achieve. Range, the air volume range of the air conditioner is [Q min , Q max ] and can be set to be the same or different for different air conditioners or different use environments of the air conditioners.
  • the air volume interval is stored in the air conditioner in advance.
  • the air volume command is determined based on the air volume corresponding to the air volume command and the boundary value of the pre-stored air volume interval. air volume range.
  • the air volume corresponding to the air volume command is Q *
  • Q a ⁇ Q * ⁇ Q b it can be determined that the air volume interval where the air volume command is located is the first air volume interval [Q a , Q b ]
  • Q b ⁇ Q * ⁇ Q c it can be determined that the air volume interval in which the air volume command is located is the second air volume interval (Q b , Q c ].
  • the second power and the second weight corresponding to the upper limit of the air volume interval to obtain the preset relationship between power and air volume.
  • h is the second weight
  • Q * is the air volume corresponding to the air volume command
  • Q1 is the lower limit of the air volume interval
  • Q2 is the upper limit of the air volume interval.
  • the first weight and the second weight The sum is 1.
  • the first power and the first weight corresponding to the lower limit of the air volume interval and the second power and the second weight corresponding to the upper limit of the air volume interval are summed.
  • Obtain the preset relationship between power and air volume. This preset relationship is essentially the relationship between power and rotational speed, but it is related to the air volume. Therefore, it is also called the preset relationship between power and air volume, that is: p * (1-h) ⁇ p1+h ⁇ p2 (4)
  • p * is the target power
  • p1 is the first power
  • p2 is the second power
  • h is the second weight
  • (1-h) is the first weight
  • the first power and the second power are obtained according to a preset relationship between power and rotational speed and the current rotational speed. In this way, the first power and the second power can be obtained quickly.
  • the lower limit value and upper limit value of each air volume interval correspond to a preset relationship between power and rotation speed.
  • the lower limit value of the first air volume interval [Q a , Q b ] is Q a and the upper limit value is Q b
  • the lower limit value Q a and the upper limit value Q b respectively correspond to a power and The preset relationship of the rotational speed
  • the lower limit value of the second air volume interval (Q b , Q c ] is Q b and the upper limit value is Q c
  • the lower limit value Q b and the upper limit value Q c correspond to a power and rotation speed respectively.
  • the preset relationship of the first air volume interval [Q a , Q b ] and the lower limit value Q b of the second air volume interval (Q b , Q c ] correspond to the same preset value of power and speed . Assume relationship.
  • the first power can be calculated according to the current rotational speed and the preset relationship between the power and rotational speed corresponding to the lower limit value, and the third power can be obtained according to the current rotational speed and the preset relationship between power and rotational speed corresponding to the upper limit value. Two power.
  • the constant k4 can be calculated by substituting the current power and the current rotational speed into the above formula (2).
  • the first power p1 corresponding to the lower limit value and the second power p2 corresponding to the upper limit value into the above formula (4).
  • the updated speed can be obtained, that is, the given speed at the next moment.
  • the updated speed can be determined based on the intersection of the two curves.
  • n next that is, the rotation speed at the intersection is the updated rotation speed n next .
  • power in the preset relationship between power and rotational speed, is related to a constant group and rotational speed.
  • the constant group is pre-stored in the air conditioner.
  • the constant group includes at least one constant, and each air volume corresponds to a constant group. In this way, the preset relationship between power and speed can be quickly obtained without occupying computing resources.
  • the preset relationship between power and rotational speed corresponding to the upper limit and lower limit of the air volume interval can be obtained through experimental testing in advance. Still taking the above example as an example, you can first set the air volume to Q a , test the data of indoor fan power p changing with the indoor fan speed n, and then perform curve fitting according to the above formula (1) to obtain ka, The values of kb and kc; using the same method, the values of ka, kb and kc can be obtained respectively when the air volume is Q b and Q c .
  • the values of ka, kb and kc can be formed into a constant group and stored in advance, that is, in In this embodiment, the constant group includes three constants.
  • the constant group may also include one constant, two constants, or more than three constants, which are not specifically limited here.
  • the lower limit value and upper limit value of each air volume interval and the corresponding constants in the preset relationship between power and speed are stored in the air conditioner in advance as a constant group, so that during the operation of the air conditioner, , after determining the air volume interval where the air volume command is located, the corresponding constant group is directly called based on the lower limit and upper limit of the air volume interval. Based on the constants in the constant group, the corresponding preset relationship between power and speed can be obtained. This can effectively save the computing power resources and computing time of the system processor.
  • the current power is equal to the target power. In this way, when the current power is equal to the target power, it can be considered that the air volume output by the indoor fan matches the air volume command. It should be noted that the equal between the current power and the target power may be completely equal, or the difference between the two may be within a set range.
  • the target power and update under the air volume Q * corresponding to the air volume command are calculated by formula (6)
  • the indoor fan is controlled according to the updated speed n next until the difference between the current machine power p and the target power p * corresponding to the air volume Q * corresponding to the air volume command is close to zero or equal to zero. That is to say, after the air volume Q * corresponding to the air volume command is determined, the corresponding relationship between the target power and the updated speed is determined. By adjusting the indoor fan speed, the corresponding relationship between the current power and the current speed gradually approaches the air volume Q * corresponding to the air volume command.
  • the corresponding relationship between the target power and the updated speed under that is, the curve corresponding to p * in Figure 3 is close to or coincident with the curve corresponding to p, This achieves rapid adjustment of the indoor fan air volume and effectively shortens the adjustment time of the air conditioner's constant air volume control process. In this way, even if the air volume decreases due to an increase in static pressure, the indoor fan air volume can quickly reach the air volume command through the air volume command, ensuring The heat exchange effect is good, and the method is simple and reliable without increasing hardware costs.
  • the air conditioner Store the constants ka, kb, kc and air volume values in Table 2 into the air conditioner accordingly.
  • the air volume corresponding to the determined air volume command is 420, which is in the second air volume interval (330, 450].
  • the constants ka, kb and kc corresponding to the lower limit value 330 are 72.7, 2.1 and 0.464
  • the constants ka, kb and kc corresponding to the upper limit value of 450 are 144.2, -3.46 and 0.746.
  • Correspondence p * 126.2 ⁇ n-2.07 ⁇ n ⁇ 2+0.6755 ⁇ n ⁇ 3.
  • the updated rotation speed n next is calculated.
  • the current indoor fan speed can be adjusted (it may not need to be repeated), and the current indoor fan power can be adjusted until the air volume output by the current indoor fan matches the air volume 420 corresponding to the air volume command.
  • the speed adjustment of constant air volume control can be completed by iterating a small number of times, thereby achieving rapid adjustment of air volume. .
  • the updated rotation speed can be calculated using the preset relationship between the rotation speed and the power and the current rotation speed, and then the indoor air volume can be adjusted.
  • the fan is controlled to obtain an air volume that matches the air volume command, so that even if the static pressure changes, the air volume output by the indoor fan can be maintained, ensuring the heat exchange effect, and the method is simple and reliable.
  • embodiments of the present disclosure also provide an air conditioner, including a memory, a processor, and a constant air volume control method for the air conditioner stored in the memory and operable on the processor. program, When the processor executes the constant air volume control program of the air conditioner, the above implemented constant air volume control method of the air conditioner is implemented.
  • the updated rotation speed can be calculated using the preset relationship between rotation speed and power and the current rotation speed, and then the updated rotation speed can be calculated.
  • the indoor fan is controlled to obtain an air volume that matches the air volume command. In this way, even if the static pressure changes, the air volume output by the indoor fan can be maintained, ensuring the heat exchange effect, and the method is simple and reliable.
  • embodiments of the present disclosure also provide a computer-readable storage medium on which a constant air volume control program of the air conditioner is stored.
  • the constant air volume control program of the air conditioner is When executed by the processor, the constant air volume control method of the air conditioner of the above embodiment is implemented.
  • the updated rotation speed can be calculated using the preset relationship between rotation speed and power and the current rotation speed. , and then control the indoor fan to obtain an air volume that matches the air volume command. In this way, even if the static pressure changes, the air volume output by the indoor fan can be maintained, ensuring the heat exchange effect, and the method is simple and reliable.
  • embodiments of the present disclosure also provide a constant air volume control device for an air conditioner.
  • FIG. 4 is a schematic structural diagram of a constant air volume control device of an air conditioner according to some embodiments of the present disclosure.
  • the constant air volume control device 200 of the air conditioner includes: an acquisition unit 210 and a control unit 220, wherein:
  • the acquisition unit 210 is used to acquire the current rotation speed and current power of the indoor fan according to the air volume instruction;
  • the control unit 220 is used to obtain an updated rotational speed, and use the updated rotational speed to control the operation of the indoor fan so that the air volume output by the indoor fan matches the air volume command.
  • the updated rotational speed is between the current power and the target power. If they are equal, it is calculated using the preset relationship between rotational speed and power and the current rotational speed, and the target power is determined by the air volume command.
  • the acquisition unit 210 may include relevant sensors to detect the real-time voltage, current and current rotation speed of the indoor fan, and calculate the current power using the real-time voltage and current of the indoor fan.
  • the acquisition unit 210 may also include a processor and a memory, and the processor executes the memory to store corresponding programs to implement the functions of the acquisition unit 210 .
  • control unit 220 may include a processor and a memory, and the processor executes the memory to store corresponding programs to implement the functions of the control unit 220 .
  • processor of the acquisition unit 210 and the processor of the control unit 220 may be the same processor or different processors, and the memory of the acquisition unit 210 and the memory of the control unit 220 may be the same memory or different processors.
  • the memory is not specifically limited here.
  • the acquisition unit 210 is configured to: control the operation of the indoor fan at a preset speed according to the air volume instruction; and detect the current speed and current power of the indoor fan after the indoor fan runs at the preset speed for a preset time.
  • the preset rotation speed is the minimum rotation speed of the indoor fan.
  • the preset relationship between rotational speed and power includes a first preset relationship and a second preset relationship.
  • the first preset relationship includes a corresponding relationship between current power and current rotational speed
  • the second preset relationship includes a corresponding relationship between target power and current rotational speed. Update the corresponding relationship of rotation speed.
  • the first preset relationship is a cubic relationship between power and rotational speed.
  • the target power is determined by a preset relationship between power and air volume and an air volume corresponding to the air volume command, wherein the preset relationship between power and air volume is a pre-calibrated corresponding relationship between power and air volume.
  • the power is based on the first power and the first weight corresponding to the lower limit of the air volume interval, and the second power and the second weight corresponding to the upper limit of the air volume interval. Obtained, the air volume interval is determined by the air volume corresponding to the air volume command.
  • the first power and the second power are obtained according to a preset relationship between power and rotational speed and the current rotational speed.
  • power in the preset relationship between power and rotation speed, is related to a constant group and rotation speed.
  • the constant group is pre-stored in the air conditioner.
  • the constant group includes at least one constant, and each air volume corresponds to a constant group.
  • the current power is equal to the target power
  • the updated rotation speed can be obtained by calculating the preset relationship between the rotation speed and the power and the current rotation speed, and then controlling the indoor fan to obtain The air volume matches the air volume command, so that even if the static pressure changes, the air volume output by the indoor fan can be maintained, ensuring the heat exchange effect, and the method is simple and reliable.
  • a "computer-readable medium” may be any device that can contain, store, communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
  • Non-exhaustive list of computer readable media include the following: electrical connections with one or more wires (electronic device), portable computer disk cartridges (magnetic device), random access memory (RAM), Read-only memory (ROM), erasable and programmable read-only memory (EPROM or flash memory), fiber optic devices, and portable compact disc read-only memory (CDROM).
  • the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the paper or other medium may be scanned, for example, by optical scanning.
  • the program may be obtained electronically by editing, interpreting, or processing in other suitable ways if necessary, and then storing it in computer memory.
  • various parts of the present disclosure may be implemented in hardware, software, firmware, or combinations thereof.
  • various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system.
  • a logic gate circuit with a logic gate circuit for implementing a logic function on a data signal.
  • Discrete logic circuits application specific integrated circuits with suitable combinational logic gates, programmable gate arrays (PGA), field programmable gate arrays (FPGA), etc.
  • first and second used in the embodiments of the present disclosure are only used for descriptive purposes and may not be understood to indicate or imply relative importance, or to implicitly indicate what is indicated in this embodiment. number of technical features. Therefore, features defined by terms such as “first” and “second” in the embodiments of the present disclosure may explicitly or implicitly indicate that the embodiment includes at least one of the features.
  • the word "plurality” means at least two or two and more, such as two, three, four, etc., unless otherwise clearly and specifically limited in the embodiment.
  • connection can It can be a fixed connection, or it can be a detachable connection, or it can be integrated. It can be understood that it can also be a mechanical connection, an electrical connection, etc.; of course, it can also be a direct connection, or an indirect connection through an intermediate medium, or it can be two The internal connection between components, or the interaction between two components.
  • connection can It can be a fixed connection, or it can be a detachable connection, or it can be integrated. It can be understood that it can also be a mechanical connection, an electrical connection, etc.; of course, it can also be a direct connection, or an indirect connection through an intermediate medium, or it can be two The internal connection between components, or the interaction between two components.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Human Computer Interaction (AREA)
  • Signal Processing (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

Climatiseur et un procédé et un appareil de commande de volume d'air constant associés, et support de stockage, se rapportant au domaine technique de la commande de climatiseur. Le procédé consiste : à acquérir une vitesse de rotation actuelle et une puissance actuelle d'un ventilateur intérieur selon une instruction de volume d'air (S11) ; à acquérir une vitesse de rotation mise à jour, la vitesse de rotation mise à jour étant calculée, lorsque la puissance actuelle est égale à la puissance cible, au moyen d'une relation prédéfinie entre une vitesse de rotation et une puissance, et la vitesse de rotation actuelle, et la puissance cible étant déterminée par l'instruction de volume d'air (S13) ; et à utiliser la vitesse de rotation mise à jour pour commander le ventilateur intérieur pour qu'il fonctionne de sorte que le volume d'air délivré par le ventilateur intérieur corresponde à l'instruction de volume d'air (S15).
PCT/CN2023/097575 2022-07-30 2023-05-31 Climatiseur et procédé et appareil de commande de volume d'air constant associés, et support de stockage WO2024027319A1 (fr)

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CN202210911338.7A CN117515817A (zh) 2022-07-30 2022-07-30 风管式空调器及其恒风量控制方法、装置、存储介质

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104729017A (zh) * 2015-03-16 2015-06-24 广东美的暖通设备有限公司 空调器的恒风量控制方法、控制装置
CN107388502A (zh) * 2017-07-31 2017-11-24 海信（山东）空调有限公司 一种风管式室内机的风量控制方法、装置及室内机
CN109357360A (zh) * 2018-09-27 2019-02-19 四川长虹空调有限公司 空调滤网脏堵情况检测与风量控制方法
CN112682883A (zh) * 2020-12-29 2021-04-20 青岛海信日立空调系统有限公司 一种空调及空调恒风量静压自适应控制方法
CN112901547A (zh) * 2021-03-16 2021-06-04 合肥美的暖通设备有限公司 一种风机控制方法、装置及风机设备

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104729017A (zh) * 2015-03-16 2015-06-24 广东美的暖通设备有限公司 空调器的恒风量控制方法、控制装置
CN107388502A (zh) * 2017-07-31 2017-11-24 海信（山东）空调有限公司 一种风管式室内机的风量控制方法、装置及室内机
CN109357360A (zh) * 2018-09-27 2019-02-19 四川长虹空调有限公司 空调滤网脏堵情况检测与风量控制方法
CN112682883A (zh) * 2020-12-29 2021-04-20 青岛海信日立空调系统有限公司 一种空调及空调恒风量静压自适应控制方法
CN112901547A (zh) * 2021-03-16 2021-06-04 合肥美的暖通设备有限公司 一种风机控制方法、装置及风机设备

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